Darren Mitchell's last Facebook post, an image of his flooding truck. His body was found downstream days later.

The body of a National Guardsman who had gone missing after a haunting Facebook post was found downstream from where his overturned truck had been located earlier.

Darren Charles Mitchell, 21, from Navasota, is now officially one of five people killed by the latest round of flooding in Texas and Kansas. At least two people were still missing on Sunday after torrential rain in Texas and Kansas flooded rivers and washed out roads.